Probing the self-aggregation of ionic liquids in aqueous solutions using density and speed of sound data

Autor:	Ma Ángeles Sanromán, José M. S. S. Esperança, A. Rodríguez, J. N. Canongia Lopes, Mohammad Tariq, Francisco J. Deive, F. Moscoso, Luís Paulo N. Rebelo
Rok vydání:	2013
Předmět:	Aqueous solution Solvation Analytical chemistry Context (language use) Atmospheric temperature range Mole fraction Micelle Atomic and Molecular Physics and Optics chemistry.chemical_compound chemistry Speed of sound Ionic liquid General Materials Science Physical and Theoretical Chemistry
Zdroj:	The Journal of Chemical Thermodynamics. 59:43-48
ISSN:	0021-9614
DOI:	10.1016/j.jct.2012.11.032
Popis:	The aggregation behavior of three 1-alkyl-3-methylimidazolium chloride ionic liquids, [CnC1im]Cl (with n = 8, 10, 12), was probed at atmospheric pressure using density and speed of sound measurements in the 283.15 > T/K > 313.15 temperature range in aqueous solutions with mole fraction ranges of 0 > x([C8C1im]Cl) > 58 · 10−4, 0 > x([C10C1im]Cl) > 20 · 10−4, and 0 > x([C12C1im]Cl) > 4.8 · 10−4. The results were used to calculate partial molar volumetric data and the isentropic compressibility of the solutions, both of which can be used as relevant properties to probe aggregate formation. In this context, micelle formation, solvation phenomena and water structural changes within the solutions are discussed in terms of the temperature and concentration dependence of the calculated properties.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f54715119f8831213e373c198a2121bf https://doi.org/10.1016/j.jct.2012.11.032 Zobrazit plný text záznamu Full Text from ScienceDirect